Shiwgle machine attachment



May 26,1931. M. w. KOSKI SHINGLE MACHINE ATTACHMENT 4 Sheets-Sheet 1 Filed Dec. 2 9 1928 Math [ll K0417525 May 26, 1931.

M. w. KOSKI SHINGLE MACHINE ATTACHMENT Filed Dec. 29. 1928 4 Sheets-Sheet 2 gwumto o Mai az osza May 26, 1931. M. w. KOSKI 1 6,

SHINGLE MACHINE ATTACHMENT Filed Dec. 29, 1928 4 Sheets-Sheet s1 gwomtw Mm? [[[Kosltz' 1 M. KOSKI SHINGLE MACHINE ATTACHMENT May 26, 1931.

Filed Dec. 29 1928 4 Sheets-Sheet 4 Mm [[[Kosjti II I. 9 nga 9 Patented May 26, 1931 UNITED staresarent oFiFics MATT W. KOSKI, 0F HOQUIAM, WASHINGTON v snnronn MACHINE ATTACHMENT Application filed December 29, 1928. Serial No. 329,103.

0 terfere with the normaloperation ofthe shingle machine, whenever that is desirable.

In association with the general object above, it is my object to produce a device of the character indicated which 'will'not in- 5 terfere in any Way with the normal operation or adjustment of the shingle machine, but which will conform automatically to all of the adjustments and changes of position "thereof.

9 It is 'a further special object to provide such a mechanism whichwill be thrown into inoperative position when the shingle machine is adjusted or opened to receive a fresh shingle block, and which will not be brought 5 back into operative position until the first spalt has been cut from the block.

Such objects as relate more specifically to structural details of my device or attachment,

and the adaptation thereof to the structural details of the shingle machine, will be better ascertained from a study of the drawings, the specification, and the claims forming part of this application.

My invention comprises the novel parts a'ndthe novel combination and arrangement thereof, and their associationwith parts of an upright shingle machine, all as shown in the accompanying drawings, described in the specification, and as will be more particularly defined by the claims which terminate the same.

In the accompanying drawings '1 have shown the principles of my inventionembodied in a form which is at presentpreferred by me, though it is to be understood that I'do not restrictmyself to the precise mechanical embodiment of my invention (which may vary according" tothe shingle machine to which it is applied), except as definedbythe claims. 7 p

Figure l is a face view of a standard upright shin le machine, showing my invention associated therewith.

Figure 2 is a vertical transverse section through such a machine, substantially on the line 2-2 of Figure 1. V v

Figure 3 is a plan View of the carriage and frame with my invention associated therewith.

Figures is 'a view'simi lar to Figure 3, showing my invention as associated with the lower portion of the carriage and frame.

Figure 5 is an elevation with parts broken away and shown in section, illustrating the upper portion of my invention in detail. 7

Figure 6 is a perspective view of a detail of the upper part of my invention, and Figure a similar view of a detail of the lower part of my invention.

Figures 8, 9, and 10 are respectively top plan View, side elevation, and bottom plan view of the cutter head and saw forming the working part of my invention.

Generally speaking, sucha shingle "machine comprises a frame 9, including hori zontal tracks 90 at top and bottom, a carriage 91 being supported by rollers 92 on the lower track 90, and being guided at its upper edge on the upper track 90, this carriage being reciprocable by suitablemeans, indicated by the pitman 93, to draw a shin le block 15, suitably held in the carriage, across the face of a saw S rotatable at one end of the can riages path of movement. Automatic or controllable feed means are provided for advancing the block B following each return stroke, so that a new shingle may be sawed ofi, but as this feed mechanism forms no part of my present invention, ithas not been thought necessary to illustrate it.

The shingle block B is held on the'carriage by two spur'rolls 8 and 80, thclater,

which is the lower, being supported in a cross bar or head 94 forming part of the carriage '91, and the upper spur rolls 8 being sup ported in cross bar or head block 81, the position of which is controlled independently of the carriage 91, but which moves transversely therewith. 1

Perhaps the best illustratio ot he sun port of the head block 81 is seen in Figures 2 and 3. Arms 95 of some considerable length are pivoted variously, according to the length of shingle being cut, in several holes 96 of the carriage 91. At their forward end they are joined by a cross bar 97, which is supported by a depending arm 82, the end of which is pivotally connected to the crossbar 97, as by the pivot pin 83. This pivot pin 83 also secures the head block 81 to the cross bar 97, and thus permits the cross bar 81 to take up any position at an angle to the cross bar 97 which may be required by reason of inclination of the top of the shingle block B, which frequently departs from parallelism with the bottom. The depending arm 82 is connected to a lever 8 1 pivoted at 85 upon the carriage 91, and connected by a link 86 of some considerable length to a trip lever 87 pivoted at 88 in position to be'engaged by the foot of the operator at will. Depression of the trip lever 87 operates to raise the head block 81, and to release the hold of the spur rolls 8 upon the shingle block B.

The above comprises a standard type of upright shingle machine, and of itself forms no part of my invention. However, my in vention is particularly concerned with the assemblage and adaptation of a butt-working device to a machine of the type described above, and the new combinations of which such mechanism is a part.

Essentially, the active member of my beveling device comprises two cutter heads 1 and 10, with which may be associated saws 11, as may be best illustrated in Figures 8, 9, and 10. The cutter heads 1 and 10 are preferably indentical in construction, and hence interchangeable in whole or in part, and the distinction is made between them merely for purposes of distinguishing the location of the two cutter heads, the cutter head 1 being the upper, and the cutter head 10 being the lower. These cutter heads are so supported and so guided, with respect to the spur rolls 8 and 80 which control the positioning of the edges of the shingle block B, that as the block is advanced toward the saw these cutter heads and their small saws 11 first act on the block to bevel its edge or edges, and to trim these ends. Conscqueutly, they must be supported from the frame itself or from some member \rliichis secured to the frame, yet they must be free to move with the carriage and be guided thereby, at least so far as concerns their movement vertically in the plane of movement of the face of the block B. As one edge or the other of the block B, that is, the top or the bottom forward edge, will be projected at any given period more than the other, that which is most projected will be most beveled, and while the edge which eventually forms the tip of the shingle will be slightly the shingle, and the butt end of the shingle will be properly beveled while the shingle still is a part of the block, and thereafter immediately this shingle will be severed from the block by the main saw S.

It will be understood that many arrangements of mechanism mightbe employed to support and guide" the cutter heads with respect to the positions of the spur rolls 8 and 80, and that various mechanisms eight be provided to swing and hold these out of the way on occasion, but I have shown one arrangement which is peculiarly adapted to the type of shingle machine which I have described, and which the drawings illustrate, and I will proceed to describe that ar 'angement in detail, without, however, limiting myself to the employment of the precise details thereof in all cases.

As a means of supporting the cutter heads in position I may employ a mechanism which is partly held on the main frame, and which is partly supported on the head block 81. This, of course, is for the upper cutter head 1, and the arrangen'ient for supporting the lower cutter head 10 may be much simpler, and this may be supported solely from the frame 9, and only guided from the carriage 91.

Referring first to the upper cutter head 1, it will be noted that a tube or guide 7 is supported at one end by a link 7 3, which, in turn, is supported from a bracket 74 secured to the main frame 9. This link 73 permits vertical adjustment of the position of the tube 7, but will not permit swinging of the tube to or from the general plane of the carriage 91. Within this tube or guide 7 is received a plunger 7 O, which is thus supported in the tube 7, and which is also supported by a bracket 72, which is supported directly upon the tiltable head block 81. This bracket 72 may be supported by the bolt and slot connection, best illustrated in Figure 3, and indicated at 75, for permitting transverse movement of the bracket, the plunger 70, and the tube 7, for a purpose which will be apparent hereafter. By this arrangement the plunger 70 moves with the head block 81 and the carriage 91, while the tube or guide 7 remains stationary, yet the guide 7 may accommodate itself to diiferences in angle and in elevation of the head block 81. It may therefore serve as a support.

To the tube 7, forming part of such a support, is secured a bearing for the cutter head 1, and this is best illustrated in Figure 5. A sleeve 2 forms a bearing for a shaft 12 carrying a bevel gear 13 meshing with a bevel gear 1 on a shaft 15, whereon is secured the cutter head 1. The shaft 15 is supported in bearings 16 and 17 within a split casing 18 enclosing the gears 13 and 14, the cutter head 1. and the sleeve 2, the latter of which, how ever, projects slightly beyond the end of the split casing 18," Thereare also means pro- 7 vided for preventing relative endwise, or

. axial movement betweenthe sleeve 2 and the,

2 from the, tube 7. Either the casing 18 may 1 rotate relative to the sleeve 2, or the sleeve 2 may rotate relative to its hanger 20, to move a casing 18, such asthe peripheral rib and groove indicated at 19 in Figure 5. A hanger 20 supports this project-ing end of the. sleeve the cutter head 1 from its operative relation to the edge of the block B,-and to insure itsreturn aspring 21 may be interposed between i .the hanger and the casing 18. i r

' ioint, indicated at 22, the extension of the To drive the shaft 12, and thence to drive the cutter head 1, I may-provide an extension of the shaft 12 through the double universal shaft being supported from the tube 7 by a second hanger 23 (see Figure 1), and from the universal joint 22, which has provision for permitting slight axial movement of the shaft 12 relative to the universal," joint, and" relative tothe drive shaft 24, supported in the bearing 74. 1A main drive shaft 25 ex-Y tends thence to a suitable source of power.

-The shaft 12, it will be noted, is not eatensible, since the cutter head 1 is, relatively.

speaking, fixed in position with respect to the path of travel of the carriage 91.

Similarly, to drive the lower cutter head 10 a vertica'lshaft 26 is driven from the shaft 24, and this inturn drives a shaft 27, supportedin a bearing 28 upon the main frame 1 9, and connecting to the cutter head 10 by an arrangement similar to that described for the cutter head 1. To accommodate-for the vertical-adjustment of the lower guide 90, due 1 to adjustment of themaehine for. a longer or shorter shingle block, or for adjustment of the position of the upper shaft 12, provision has been made, as indicated at 29, for adj ustment of the drive means between the shaft,

26 and the shaft 27 I I It will be evident that it is not desirable that the cutter heads 1 and 10 remain in position when a fresh block has been placed in the carriage, at least until the first spalt has been taken from the block. Otherwise a long bevel would be required, with consequent strain and wasted efi'ort.

heads should be automatic. The spur roll 8 is raised to permit insertion of a new block by stepping on the trip lever 87, and by the same means, or connections. therefrom, 511",

'rangements may be made for swinging the two cutter heads temporarily out of position and holding them until the first spalt has been taken off, parts being then returnable to their normal positions by means preferably operable through movement of the carriage 91 into the position shown in Figure 1, where it is ready for the first'shingle to beisawed oil of the block, 7

-' Referring first to the lower cutter" head 10,

Thereafter, however, the coming into position of the cutter [and to Figures 2 and 7, it will be noted that the casing 18 is arranged to swing on the axis of, the shaft 27 by means'of a lever 3 clamped to an extension of the casing 18,; and connected through a link 30, bell crank lever 31, and-link 32, to the trip lever 87. A nut" 33 on the endof thelink 32 is permitted to have a certain amount' of free play relative to its arm of the bell crank lever 31. Thus the parts may be moved from the full line to the dotted line position of Figure 2, or

vice versa. 7 To hold parts in the-dotted line position there is provided a pair of toggle levers 34 and 35, respectively, pivoted together at one end, one pivoted at 36 upon the irame 9, and the other pivoted at 37 to one hold the cutter head out of position. To permit the return of the cutter head to normal position under the influence of spring 21 various mechanism' might be arranged, connected to be operated by movement of the e carriage 91. I have shown-a bell crank lever 4 pivoted at 40 upon the frame 9, and having one arm positioned over the common pivot of the toggle levers 34 and 35, and

having its other arm positioned to be engaged by a swinging arm. 41 which will swing freelyfrom the carriage: 91 in moving toward the saw'to pass the arm of the lever 4, but which will be stopped'and will not swing on the-return stroke of the carriage.

Thus, it will catch thearm of the lever 4 and cause the lever to strike and breakthe toggle 3 17-35 on the return stroke o fthe carriage. V

A similar arrangement maybe made with respect to the cutter head 1. Thus, referring particularly to Figures 2 and 6,the two toggle bars 34 and 35 are employed, butin this instance the toggle bar 35-is secured to a short lever arm 76 secured upon and oscil latable about the axis of the tube 7, and the toggle bar 34 is supported upon a member 50 clamped or otherwise secured to about arm 5 which is clamped upon the casing 18. The toggle bar 34 continues as a bell crank lever, the end of which carries a striker 39 engageable with an inclined/cam surface carried upon the end of an arm 6'pivoted at 61 upon the carriage 91, or a membermovable therewith, and free to swing in one di: .rection as the carnage advances toward-tho saw, but heldby a stop 62 to prevem its swing ng when the carriage moves mthe reverse direction, so that as the carriage co npletes its return stroke the engagement of 'position under the the striker 89 with the inclined surface 60 will break the toggle 3435 if parts are in the dotted line position of Figure 2 (see also Figure 6).

Normally the upper toggle 34, 35 is carried in the full line posltion of Figure 2, with the striker 39 out of position to engage with the cam 60. The arm 5, however, will rise as the head block 81 is raised by the lever 84 and trip lever 87, and as its end carrying a roller 51 is positioned immedi ately below the position of a curved, camlike member 52 bearing a roller 53 at its lowest point, and supported upon the carriage 91, the arm 5 will be depressed when the carriage moves back to its full retracted position, by engagement with the member 52, and the toggle 34, 35 will set in the lower dotted line position of Fig. 2, which brings the striker 39 in line with the cam 60.

The purpose of these toggle arrangements, as has been suggested above, is to throw the cutter heads 1 and 10 temporarily out of operative position when a fresh block is supported in the carriage, and until the first spalt is sawed from the block. Depression of the trip lever 87 to permit the insertion of a new block is thus seen automatically to move the cutter heads out of operative position, and to hold them during the time that the carriage and block are advanced toward the saw, and until the end of the return movement of the carriage, at which time they are automatically released and dropped back into operative influence of their springs 21.

It is desirable to guide the cutter heads from the spur rolls or members positioned coincidentally with these spur rolls, each of the spur rolls is provided with a spalt catcher 45, the purpose of which is to catch and hold the spalts and to prevent their falling into cutters 1 and 10 or on the floor. These spalt catchers may be provided with longitudinal guide ribs 46, and the casings 18 may each be provided with guide rollers 47 which engage these ribs 46 to position the respective cutter heads. These guide rollers 47 may be mounted in slides 48 which are adjustable transversely of the axis of the cutter head 1 by a pin and slot arrangement (best seen in Figure 2), by which means the position of the cutter head and its angle relative to the edge of the block B may be adjusted. This may also be complemented by the pin and slot arrangement at 75 (see Figure 3), and by adjustment at these two points the angle of the bevel and its length, either or both, may be nicely regulated.

Naturally, it is not always desirable to cut bevel butt shingles, nor is it desirable in all cases to tie up a shingle machine solely for the production of this type of shingle. In order that a machine having this attachment may be enabled to saw the standard type of shingles, the attachment described is provided with means whereby it may be moved to an indeterminately inoperative position. Such positions are indicated in Figure 2 by dotted lines, in the case of the cutter 1 at the top, and in the case of the cutter 10 at the bottom, and any convenient means, such as a hook 49, is employed to retain the respective cutter heads in this position. These hooks may be conveniently pivoted on any adjacent support, as for instance in the case of the lower hook 49 upon the main frame 9, and in the case of the upper hook 49 upon a ring 42 secured upon the tube 7.

However, in order to permit movement of the respective cutter heads into the position indicated, it is necessary that they be disconnected, for the time being, from the operating mechanism to which they are connected, and thus in Figure 6 I have shown a cotter pin 48, by means of which the pin connecting the lever 76 with the link 35, may be removed quickly and easily, and in Figure 7 a similar cotter pin 44 has been shown for the same purpose.

By thus moving the cutter heads into these out-of-the-way positions, the shingle machine may operate in its normal fashion, and may be adjusted without interference, yet it is ready for use as a bevel butting machine, with but slight delay, whenever a block suitable for the purpose comes to hand.

My attachment involves a further advantage, in that the butts of shingles may be smoothed and sawed, or trimmed, before the shingles come elf of the block, even though the butts may not be beveled. For such operation the cutters would be omitted from the cutter head 1, or the cutter head would be omitted altogether, and the saw 11, only, would be used. These saws operating at high speeds, of the order of 3000 R. P. M., will "cry smoothly trim the ends of the shingles which are to be sawed off of the shingle block. Vestern red cedar, of which the majority of shingles are made, is a soft wood, and the coarse saws used to saw up the blocks tear the grain of the wood and render the butts quite rough and broken, and they do not present an attractive appearance. Moreover, the U holes thus left, and the jagged ends, provide means for permitting the entrance of water into the fiber of the shingle, thus tending to lessen the life of the shingle. By the use of the saws 11 alone, a smooth, perfect butt may be produced on any grade of shigles, to their improvement in appearance and in quality. It will also be apparent that the cutter heads 1 and 10 might be employed, if desired, without the saws 11, though ordinarily the saws would be employed.

What I claim as my invention is:

1. In combination with a shingle machine including a movable carriage, and means for holding a shingle block thereon, a cutter head. i

head to accommodate blocks of randomlengths.

'2. In combination including a frame, a carriage slidable thereon, means for supporting a shingle block upon said carriage, and a saw disposed tovsever shingles from such a block,-a cutter head positioned to engage and bevel an edge of the shingle block prior to its engagement by the r saw, and means shiftable withthe block-supporting means to position the cutter head relative to blocks of'random lengths.

3. In combination witha shingle machine ncluding a frame, a carriage slidable there- ,,on, means for supporting a shingle block upon said carriage, and a saw disposed to sever shingles from such shingle block, a cutter head, means for mounting said cutter head shiftably and readily movable from a "position to engage and bevel an edge of the shingle block to a position which clears the block, and means movable at will to nstantly shift said mounting to a second position. V

4 In combination with a shingle machine including a frame, a carriage slidable thereon, means for supporting a shingle block upon said carriage, and a saw disposed to sever shingles from such shingleblock, a cutter head, means for mounting said cutter head shiftably and readily movable from a posi- 35 'tion to-engage and bevel'an edge of the sh1ngle block to a position which clears the block, and means movable at will to instantly shlft said mounting to a second position, means for H. holding said cutter head in such second posi- 4o tion, and means automatically operable prior to reengagement of the shingle block wlth the saw to release said holding means.

5. In combinationwith a shingle machine including a transversely movable carriage and a head block vertically movable thereon and engageable with a shingle block to support it upon the carriage, and a saw at one end of the pathof travel ofthe carriage e .to sever shingles from the block, means for beveling an edge of the shingle block prior to its engagement by the saw, said means-being guidingly supported by the head block, and carried thereby for vertical ad ustme nt.

'6. In combination with a shingle machine including a frame, a carriage transversely movable thereon, a head block vertically movable on the carriage and engageable with a shingle block to support it thereupon, and a saw at one end of the path of the carrlage to sever shingles from the block, means disposed adjacent the path of-travel of the shingle block to bevel an edge thereof prior to its engagement by the saw, and means connected to the frame and guidingly carr ed bvthe a I carriage for supporting said bevelmg means.

with a shingle machine 7. In a shingle machine, in' combination with a frame and a carriageguided thereon for transverse movement, means for'securing a shingle block upon said carriage, bevel cutting means positioned to act upon such a block in passing from onelimit of its movement to another, means operable to move said beveling means from operative position, means for maintaining said beveling means in such inoperative position during movement of the carriage towards one extreme position, and means operable from'said carriage upon its return to release said latter means.

' 8. In a shn'lgle machine, lncombination with a frame and a carriage gulded thereon for transverse movement, means for securing a shingle block upon said carriage, bevel cutting means positioned toact upon such a block in passing from one limit of its movement to another, means operable tomove said beveling means from operative position, means for maintaining said beveling means in such inoperative position during movement of the carriage towards one extreme position, and means operable from said carriage upon its return'to release said latter means, and

yieldab'le means to return said beveling means, following such release, to operative posltlon. v a

9. In a shingle machine, in combination with a frame and a carriage guided thereon for reciprocation, means forsecuring ashingle block upon said'carriage, bevel cutting means positioned toact upon such shingle block in passing from one limit of "its movement to another, and means cooperating between said bevel cutting means and the car riage for determining the angle of the bevel cutting means relative to the face of the block.

10. In a shingle machine, in combination with a frame and alcarriage guided thereon for reciprocation, means for securinga shingle block upon said carriage, bevel cutting means positioned to act upon such shingle block in passing from one limit'of its movement to another, means cooperating between said bevel cutting means and the carriage for determining the angle of the bevel cutting means relative to the face of theblock, and means for adjusting said latter means to vary the angle of the bevel cutting means relative to the face of the block. I V

11. In a shingle machine, in combination with a frame and a carriage guided thereon for reciprocation, means including a shiftable spur roll for securing a shingle block upon said carriage, bevel cutting means positioned to act upon such a block in passing from one limit of its movementto another,

and means controlled from the shifta'ble spur roll for supporting and varying theposition of thebevel cutter in accordance with variations in position of such spur roll;

12. A shingle machine as in claim 11, said latter means including a telescoping guide tube and plunger, one thereof being anchored to the frame and the other supported upon the shiftable spur roll support, and the assembly having mobility in the plane of movement of the carriage, and said bevel cutter being directly mounted on the anchored member of the assembly.

13. A shingle machine as in claim 11 said latter means including a telescoping guide tube and plunger, one thereof being anchored to the frame and the other supported upon the shiftable spur roll support, and the assembly having mobility in the plane of shifting of the spur roll, said bevel cutter being directly mounted on the anchored member of the assembly, and guide means co-operable between said bevel cutter and the shiftable spur roll support.

let. A shingle machine as in claim 11 said latter means including a telescoping guide tube and plunger, one thereof being anchored to the frame and the other supported upon the shiftable spur roll support, and the assembly having mobility in the plane of shifting of the spur roll, said bevel cutter being directly mounted on the anchored member of the assembly, and means for adjusting the inclination of the bevel cutter relative to the plane of movement of the carriage.

15. A shingle machine as in claim 11, said latter means including a telescoping guide tube and plunger, one thereof being anchored to the frame and the other supported upon the shiftable spur roll support, and the assembly having mobility in the plane of shifting of the spur roll, said bevel cutter being directly mounted on the anchored member of the assembly, longitudinal guide means upon the shiftable spur roll support and cooperating guide means carried by the bevel cutter, and means associated with said guide means and with the tube and plunger support for adjusting the position and inclination of the bevel cutter relative to the plane of movemont of the carriage.

16. In a shingle machine, in combination with a frame a carriage guided thereon for transverse movement, means for supporting a shingle block upon said carriage, and a saw position at one end of the carriages travel to cut shingles from such a block, a rotary bevel cutter positioned to act upon such a block as it moves towards the saw, an oscillatable support for said bevel cutter disposed parallel to the plane of movement of the carriage, means operable at Will to oscillate said support and the bevel cutter to inoperative po sition, a pair of toggle links operatively connected to said support to be moved by such movement thereof into locked position, and means operable by movement of the carriage away from the saw to break the toggle to per: mit return of the bevel cutters into operative pesition.

17. In a shingle machine, in combination with a frame, a carriage guided thereon for transverse movement, means including a spur roll and a shiftable supporting block therefor for supporting a shingle block upon said carriage, and a saw positioned at one end of the carriages travel to cut shingles from such a block, a rotary bevel cutter positioned to act upon a shingle block supported in said carriage as it moves towards the saw, an oscillatable support for said bevel cutter disposed parallel to the direction of movement of the carriage, a telescoping guide tube and plunger disposed generally parallel to the direction of movement of the carriage, one thereof being anchored to the frame and the other supported upon the tiltable spur roll support, and the assembly having mobility in the plane of shifting of the spur roll, said oscillatable support for the bevel cutter being suspended from the anchored member of said assembly, an arm fixed to said oscillatable cutter support, a fixed cam member engageable with said arm by movement of the spur roll support transversely of the normal direction of the carriages movement, to be depressed thereby, toggle links connecting said arm and said tube and plunger assembly to maintain the arm in depressed position, and two cooperating cam means engageable prior to re-engagement of the shingle block and saw to release said toggle links.

18. In a shingle machine, in combination, a frame, a carriage reciprocable thereon, means for supporting shingle blocks of random lengths on said carriage, a saW positioned to sever shingles from such a block, trimmer tool positioned adjacent the path of movement of, and substantially at right angles to each end of the shingle block, and engageable therewith prior to engagement with said saw, and means shiftable with the block-supporting means to position the trimmer tool relative to blocks of random lengths.

19. In a shingle machine, in combination, a frame, a carriage reciprocable thereon, means for supporting a shingle block on said carriage, a saw positioned to sever shingles from such a block, and a butt-Working tool positioned adjacent the path of movement of each end edge of the shingle block, and engageable therewith prior to engagement with said saw, means shiftable with the blocksupporting means to position the trimmer tool relative to blocks of random lengths, and means permitting removal of said tools from operative position at will.

20. In a shingle machine, in combination with a frame and a carriage guided thereon for reciprocation, means including a tiltable head block for supporting a shingle block upon the carriage, bevel cutting means positioned. to act upon such shingle block upon reciprocation of the carriage, and means controlled by the tilting of the head block to accommodate shingle blocks having inclined ends to Vary the position of the bevel cutter to maintain the same position of the latter relative to the head block and the shingle block supported thereby.

V Signed at Hoquiam, Washington, this 19th day of December, 1928.

V MATT KOSKI. 

